Fastening machine



feb. 14, 1933. v. A. svENssoN 1,897,625

FASTENING MACHINE Filed Jan. 28, 195o w2 sheets-sheet 1 J Il Y r 0 l l.\M u j A Wa m.. m 1W I Feb 14, 1933 v. A. svENssoN 1,897,625

' FASTENING MACHINE Filed Jan. 28, 1930 2 sheets-sheet 2 fik/7, y

EEE'

Patented eb. 14,1933

UNITED STATES PATENT OFFICEA VICTOR A. SVENSSON, OF MONTCLAIE, NEWJERSEY, ASSIGNOR TO BATES MANU- FACTURING COMPANY, OF WEST ORANGE, NEWJERSEY, A CORPORATION OF NEW JERSEY FASTENING MACHINE My inventionrelates to fastening machines and more particularly to an improvedfastening machine, preferably of the manually-operable desk or tabletype, adapted to secure together a plurality of superposed sheets orlayers of paper or other material, preferably by means of staples cutand formed from wire which in the repeated operations of the machine isautomatically fed from a spool or other source, in successive andsubstantially uniform lengths to a proper predetermined position for theproduction of the staples therefrom.

In some aspects the present invention is an improvement over thosedescribed and claimed in Patents No. 1,610,632 and No. 1,637,357, whichwere both issued to Sven Svenson on December 14, 1926, and August 2,1927, respectively. I y 1 Generally described a preferred form ofsheet-fastening machine in accordance with my invention comprises a baseprovidedv with an anvil, a wire-feeding slide or member mounted forreciprocatory movement in a horizontal direction over said base andhaving a portion constituting a mandrel which in the movements of theslide, is brought to and removed 4from cooperative relation withv saidanvil, vertically movable and preferably manually operable meansarranged to cooperate with the anvil and mandrel to form and clench thestaples and biased to raised inoperative position and mechanism whereby.

such means in its vertical movements properly controls and effects thereciprocatory movements of the wire-feeding slide and its mandrel. 'Thevertically movable means referred to is preferably in the form of atwopart plunger device, the construction being such that both parts ofthe plunger device are moved downwardly together during the cutting andforming of a staple and one of such parts is thereafter moveddownwardlywith respect to the other part to force the formed staple through andclench the same against the sheets being secured together. It isunderstood, however, that various features of my invention are adaptedfor application to or embodiment in other forms of fastening Applicationilled January 28, 1930. Serial No. 423,972.

machines and also in machines designed for other uses.

One of the objects of the invention is to provide an improvedandsimplified machine of the character described and which is preferablyso constructed as toprovide a much deeper gap for the reception of thesheets to be fastened together wherebythe distance from the edges of thesheets within which the fastening staples may be positioned is greatlyincreased.

Another object of the invention is to ,pro-

vinde a fastening machine of this character in the operation of whichthe superposed sheets to be secured together are first engaged and heldinthe desired position for st-apling and in which uniform movements arethereafter imparted to the plunger device in effecting the cutting,forming and clenching of suclcessive staples regardless of the combinedthickness of the said superposed sheets.

Another object of the invention is'to provide improved and simplifiedmeans whereby the lengths of wire from which staples are formed insuccessive operations of the machine, are successively fed to andproperly lined up or positioned with respect to the plunger device whichcuts the wire and forms the staples over the mandrel.

- Another object of the invention is to provide in a machine such asdescribed, simple and effective means for. ensuring the passage of theforward or free end of the Wire, as the latter .is advanced in themachine, over the feeding slide Vto thereby prevent interference betweenthe wire and the said slide and the catchin of the wire between suchslide and the gui e for the latter.` Y

Another object of the invention is to provide in a machine of thischaracter improved and simplified means for positively and efreason ofthe reciprocatory movements of the plunger device. (l

Another object of the invention is to rovas vide an improvedyconstruction whereby urfing .a portion of eachstroke of the'plungerdevice both parts of the latter are caused to move together and'duringthe rest of the 10 stroke one of such parts moves with respect toland independently of the other.

Another object of the invention is to provide a structure comprising abase carrying the anvil and a support or frame carrying the plungerdevice and other mechanism, wherein said support or frame is pivotallyconnected adjacent one end thereof to said base at a point remote fromthe anvil and wherein means is provided for yieldingly maintaining theforward or free end portion of the support in predetermined raised orspaced position with respect to the anvil so as to permit the insertionof t-he sheets to be fastened or stapled together, said means alsoreferabl being adaped to prevent play in t e pivota connection betweenthe said base and sup ort and to maintain the plunger device in aignment with the anvil.

yOther objects of the invention are to pro vide a simple and novelmounting for the spool from which the wire for the staples is fed to themachine, which enables the spool to be readily applied to the machine inproper position thereon and to be quickly and easily replaced, and toprovide simple and effective means for opposing the unwinding of thewire from the spool with a resistance which.

preferably varies substantially in direct proportion to the radius ofthe reel of wire on the spool and which also preferably acts to maintainthe spool in its proper mounted position. A further object of theinvention is to provide an improved construction and arrangement wherebythe clutch devices which respectively comprise part of and cooperatewith the wire-feeding means, ma readily be releasedoso as to facilitatethe t reading or leading the withdrawal-of the wire therefrom. A furtherobject of the invent-ion is to provide an arrangement wherein theplunger device is actuated in the wire-cutting and staple forming andclenching stroke thereof through a lever action and whereby theexpenditure of less effort is required to so actuate the plunger device.

A further object of the invention is to rovide a construction referablyinclu ing means for limiting the down stroke of part of the plun erdevice, which will eiectually prevent t e base of a staple formed in themachine being forced through the material being fastened-something whichis quite likely to happen in the operation lof certain machines of thesame general character, particularly when the sheets being fastened areof smal aggregate thickness.

A `still further object of the invention is to provide a device ofimproved design whereb staples may be more readily driven throng thickorhard layers of material to be fastened, and the capacity of themachine is accordingly increased.

in of the wire into the machine and Figure 2 is a View similar to Fig.1, but' showing the parts in the positions they occupy at the end of adown stroke of the plunger device;

' Figure 3 is a fragmentary view taken approximately on the broken line3 3 of Fig. 2, parts being broken away and parts being shown in full;

Figure 4 is a bottom plan view of one end portion'of the machine shownin Fig. 1;

Figure 5 is a view in front elevation, partly broken away and partly insection, of the .machine as shown in Fig. 1;

Figure 6 is a View in perspective of the plunger device showing the twoparts in their normal locked relation;

Figure 7 is a sectional view, partly in elevation, on line 7'-7 Fig. 1;and

' Figure 8 is an enlarged detailed part sectional view of one of thewire-clutch devices.

Referring to the drawings, the fastening machine shown comprises asubstantially rectangular base 1 having a peripheral depending llan e1', a pair of lugs 2 struck-up therefrom a jacent its rear end atopposite sides of a substantiall rectangular opening 3, and an anvil 4suitatvil jacent its forward end. The support or frame A for carryingthe spool of wire, the wire-feeding means, the plunger device andvarious associated parts, comprises a casing serves to pivotally supportthe fra-me on the base. The projections 8 and 9 are provided at theirlower ends with angular forwardly extending arms 8 and 9', and twospiral springs 11 and 12 are respectively connected at their ends tosaid arms and to lugs 13 and 14 which are struck from the base 1 andextend downwardly at opposite sides of a rectangular opening 15 in thelatter. The

y secured thereto adsprings 11 and 12 are under tension and constantlytend to maintain the frame or support A in'its raised or uppermostposition,

as shown in Fig. 1, the upward movement` of the frame about the pivotpin 10, under .the action of these springs, being limited by openingsfor the pin in the projections 8 and 9. Playin the pivotal connectionbetween the base 1 and frame A is thus prevented and the plunger device(hereinafter described and mounted on the forward end of the frame) isalways maintained in proper alignment with the anvil 4. The constructiondescribed normally provides a long gap between the base and frame A forinsertion of the sheets to be secured together over the anvil 4, andpermits such sheets to be stapled together at any desired position orpositions within a much greater distance from the edges of the sheetsthan is possible in machines of this character heretofore produced.

The plates 5 and 6 of frame A are maintained rigidly in proper spacedrelation at their rear ends by a small fixed substantially fiatrectangular member 16, which is horizontall disposed between said platesat a point slightly above the pivot pin 10 and which has laterally'extending rectangular reduced portions or lugs 17 respectively closelyengaging correspondingly shaped openings in the plates. The member 16has a rearward eX- tension which curves upward and serves as a` guidefor the wire withdrawn from the spool in the operation of the machine.

The spool S carrying the wire W from which the staples are produced, isremovably supported in a novel manner between similar rearwardlyextending and part circular portions 5 and 6 of the plates 5 and 6. Thespool comprises a cylindrical barrel 18 and circular end plates 19 tothe central portions of which the ends of the barrel are suitablysecured. The plates 19 have aligned circular openings at their centers.within which the cylindrical rod or shaft 20 for supporting the spoolis adapted to loosely fit and is normally disposed. The rod 20 hasreduced'cyli'ndrical ...ends 21 and beveled or conical shoulders 22btween the latter and thel adjacent ends of its main portion. Alignedcircular openings 23, slightly larger in. diameter than the rod 2O, areprovided in the`portions 5' and 6" of plates 5 and 6 and have downwardlyoff-set "reduced portions 24` which conform to and provide seats for thereduced ends 21 of rod 20. The central portions of plates 19 of thespool a-re deiiectedinwardly as indicated at 19', 'so-that the walls ofthe center openings therein will provide bearings for the ends of themain portion of shaft 20 when the latter is mounted with its reducedends 21'disposed in their seats 24 as Yshown in Fig. 7'. Normally thespool is mounted in the position shown in Figs. 1 and 7, 'with'the ends21 of its supporting rod 20 engaging the seats 24. A bent spring strip25 is fixed at one to member 16 so that it is adapted to be enga ed atits free end, by the outermost layers o the wire on the spool when thelatter is mounted as shown. This engagement of the wire with the spring25 is at a point above the axis of the spool and tensions the spring,the latter accordingly then acting to maintain the ends 21 of shaft 20in their seats 24. The spring 25 also by reason of its engagement withthe layers of wire on the spool, oifers rictional resistance to theunwinding of the wire, the design being such that such frictionalresistance to the turning of the reel decreases ,substantially in directproportion to the decrease in the radius of the reel of wire on thespool, whereby the actual pull necessary to be applied to the Wire tounwind the same remains substantially constant. regardless of the amountof wire on the spool.

With the construction described, in dismounting the spool, it is merelynecessary to raise the same against the action of the spring 25 untilthe shaft 20 is aligned with the enlarged circular portions of openings23,'and to then withdraw the shaft from the spool through one of saidopenings and remove the spool from between the plates 5 and 6. In

mounting such spool, the same is first disits axial opening aligned withthe circular portions of the openings 23 in such plates and with thewire wound thereon engaging the under side of the free end of spring 25,the

rod or shaft 20 is next inserted in such openings, and the spool is thenreleased whereupon gravity and spring 25 act to force the reduced ends21 of the rod intotheir seats 24. The beveled shoulders 22 of the rod 20greatly facilitate the operations of removing and replacing such rod inthe manner described.

.posed and held between plates 5 and 6 Wthfm.

An auxiliaryframe comprising similar l spaced parallel verticallydisposed plates 26 and 27 and a transverse substantially horizontalbottom web 28 connecting and preferably formed integrally with saidplates, is firmly secured between the forward portions of plates 5 and 6of the main support or' frame A as by means of screws or bolts 29, withthe forward vertical/edges of its plates 26 and 27` spaced lsomewhatrearwardly from the front web 7 of frame A to provide a verticalguideway for the plunger device. The wirefeeding slide 30 issubstantially rectangular,

and is mounted for horizontal movement in stituting the mandrel-overwhich the staples `are formed, a rectangular notch 33 in its rear endportion within which a one-way roller wire clutch device C is supportedfrom a 5 bracket 34 carried by the slide, and a longitudinally extendingslot 35 formed therethrough adjacent its forward end. A pin 36 ismounted in the opposite sides of slot 35 and extends across the lattermidway between the ends thereof. A bell crank lever 37 is pivoted on ahorizontal pin 38 mounted in and extending between plates 26 and 27 theend of one armfof this lever extending into the slot 35 of slide 30 andhaving a slot 39 fairly closely enga ed by pin 36 and the end of theother arm o such lever having two spaced projections or teeth 40 and 41.The bottom web 28 of the auxiliary frame is slotted as shown at 42 toaccommodate the lower end of lever 37 in the movements of the latterabout pin 38.

The two-part plunger device comprises a cutting and forming member ordie 43 which is substantially rectangular and is disposed for verticalreciprocatory movement .in the guideway provided by the front verticaledges of plates 26 and 27 and the forward vertical end portion of themain frame or supp't A, and a substantially rectangular punch or stapledriving member 44.

The die 43 consists of similar rectangular spaced side members and 46connected by a thin integral front web 47, a channel thus being providedin the rear lof said web in which the punch 44 is mounted for slidingmovement. The web 47 terminates some distance above the lower end of die43, the construction being such that the lower spaced end portions ofthe side members of the die are adapted to straddle and fit fairlyclosely over the mandrel 32 upon the down stroke of the plunger device.The side members 45 and 46 have notches 48 in their outer edges, and

plates 26 and 27, extend into these notches and coact with the endsthereof to limit the vertical movements of the' die. The inner opposededges of members 45 and 46 are provided for their entire length withsmall vertical grooves 50. y j

The punch 44 consists of a rear thick block l or member 51 and athinfrontplate or member 52'secured as by riveting to such block. Themember 52 extends downwardly below "the lower end of block 51 and itsedge portions project beyond the side edges of the block and slidablyengage the grooves in the die, to which grooves such side edge portionsconform. A pawl 53 in the form of an inverted U. embraces block 51 andispivoted on a lug 53'- whichis integral with and projects rearwardlyfrom the block. -A'small compressionv spring 54 disposed betweenI block51 and the upper end of pawl 53, tends 5- to maintain the latter intheposition shown lugs 49 projecting from the front edges of Leemans y inFigs. 1 and 6 in which the teeth thereof engage angular notches 55formed in the rear faces of members 45 and 46 of the die. At its upperend pawl 53 is provided with a rearwardly extending lug 56 adapted tocoact with the upper screw or bolt 29, as will presently appear. At itslower end block 51 is provided with a rearwardly extending lug or tooth57 which projects between and is adapted to coact with the teeth 40 and41 to effect angular movements of lever 37 and thereby backward andforward reciprocatory movement of slide 30 upon the down and up strokes,respectively, of the plunger device. Thefront web 47 of die 43 has avertical slot 58, and a pin 59 secured to punch 44 extends into saidslot and coacts with the upper end thereof to limit the upwardreciprocatory movement of the punch with respect to the die.

For the manual actuation of the machine, I provide a long channeledlever 60 which is pivoted at its rear end, by means of the horiz'ontalscrew'or bolt 61, to' the main frame A at a point adjacent that portionof the latter in which spool S is mounted. At its front end, which islocated a considerable distance forwardly of the front end of frame A,lever 60 is provided with a handle 62. and intermediate its ends suchlever has. a pair of similar downwardly extending lugs 63. These lugs 63are preferably formed integrally with the sides of the channel piecefrom which lever 60 is formed and embrace the frame A at the front endportion thereof in which thev plunger device is mounted. Two verticallydisposed links 64 are respectively pivotally connect-ed at their lowerends by pins 65 to the lower ends of thelugs 63 and lie adjacent theinner surfaces of the latter.

A horizontal wrist pin or rod 66 is secured at its ends in the upperends of links 64 and extends loosely through an opening 67 provided inthe enlarged upper end of the block 51. The pins 65, links 64 and wristpin 66, as

is obvious, form an operative connection bespectto the main `frame A. asshown in Figs.

1 and 5, in which the lower ends of the notches 48 in die 43 engage thelugs 49 of plates 26 and 27, the pin 59 of punch 44 enu gages the upperend of slot 58 in the die and the teeth of pawl 53 rest in the notches55 of the die. v y

The lower active face ofthe staple driving member or blade 52 of thepunch is made slightly convex or is beveledat its corners, (see Fig. 5),whereby a better support is provided for the staples when the same aredriven through and clenched against the sheets being fastened together.This design of the punch blade is particularly eiiicacious when thick orhard sheets of material are being secured together, and has, to a markeddegree, increased the capacity of the' machine. The lower end faces ofmembers 45 and 46 of the die are provided with transverse alignedangular notches 70 adapted, upon the down stroke of the die, to engagethe end portions of the piece of wire to be formed into a staple and toguide the same into the vertical grooves 50 in said members, the innerends of the notches respectively intercepting said grooves.

' A one-Way roller clutch device C', similar in all respects totheclutch device C, is supported by and depends from the plate or member16. The clutch device C and C are respectively fixed to the .member 16and the bracket 34, as by being riveted thereto. Each of these clutchdevices, referring now to Fig. 8, comprises a rectangular block 72having a small cylindrical opening 73 extending therethrough from end toend and adjacent the top thereof, and a slot 7 4 intercepting suchopening and inclining downwardly therefrom to the front end of theblock. The slot 74 extends from one side of f the block to the other andhas freely mounted therein the clutch roller 75 the ends of whichrespectively project beyond the sides of the block. Reference character76 represents a member for controlling the action of the clutch device,such member comprising a stirrup and an arm 77 preferably formedintegrally with the base of the stirrup and extending substantially atright angles to the sides of the latter. The sides 78 of the stirrupembrace the block 72, and the member 76 is pivotally mounted on theblock by'a pin 79 which extends through the latter and the said sides.The upper end portions of the sides 78 are provided with similar slotswith which the projectingr ends of the rollers respectively engage. Asmall coil spring 80 disposed between the bottom of block 72 and the endof arm 77, constantly 'tends to hold the pivoted member 76 in theposition shown in Fig. 8 wherein the stirrup arms 78 maintain the roller7 5 positioned with a portion thereof projecting from the upper end ofslot 74 into the opening 73.

The clutch devices C and C are so mounted that the' openings 73 providedfor the wire W in the blocks 72, are in alignment, the said openingsbeing flared at their rear ends to facilitate the insertion of the wirethrough the machine. The clutch device C will permit the wire W to passfreely therethrough in a direction from the spool S toly with slide 30,it will tightly grip the wire and impart .a like movement thereto andthereby withdraw or unwind more wire from spool S. 1

An elongated member 82, which is preferably stamped from sheet metal, isdisposed just beneath the top of base 1 between the arms 8 and 9 and thesprings l1 and 12, and 1s pivotally supported in this position from thepin 10 by means of spaced upstandin lugs 83 with whichsuch member isprovided andthrough which said pin extends. Projections or tongues 84and 85 struck up from member 82, respectivelyl extend upwardly throughthe openings 3 and 86 in base l and are adapted to engage and coact withthe arms 77 on members 76- of the clutch devices C and C to release thelatter. Normally the clutch. releasing member 82 is held in inoperativeposition by a leaf sprin 87 secured at one end to such member an engagedat its other end'with the base 1. 'Movement the clutch devices are thusreleased the wire may be readily threaded into or withdrawn from themachine, freely through the clutch devices in either direction.

The bracket 34 carrying the clutch device C has two spaced lugs 34 atits front end which are bent downwardly and riveted to the top of slide30, the bracket thus being secured to the slide. The construction issuch that the main rear portion of bracket 34 to which clutch device Cis secured, is disposed at such a distance above the slide 30 that thewire receiving opening 73 in block 72 of said device is at a level onlyslightly above the upper surface of the slide. A wire guidas it can thenbe passed ing tube 89 is carried by slide 30, and has the rear portionthereof extending substantially parallel to the slide and terminatingclose to the front end of block 72 of clutch device C and with theopening thereof in registry with the opening 73 in said block. Forwardlyof its said rear portion, the tube 89 is curved outwardly throughregistering slots 90 provided in plates 6 and 27, to a pointconsiderably beyond the confines of the main frame or support A, and isthereafter curved inwardly to a point of termination adjacent the frontend portion of said frame A and in which the guide is directedtransversely of slide 30 but at a veryslight angle forwardly of a lineperpendicular to the direc-4- tion of movement of the slide. The forwardcurved portion of guide 89 extends through adis suitably secured withina channeled guard 91 having a rear transverse end portion 9T. whichextends through slots 90 in plates 6 and 27 and is secured, as by screwsor pins, to slide 30. In order that the forward end portion Wi of lthewire which projects or is to be projected from the forwardv end of guidetube 89 over and across the mandrel 32 of slide 30, shall be properlypositioned over the mandrel and lined up with and beneath the transversenotches or grooves 70 in the bottom end faces of the legs or sides 45and 46 of the die and with the lower face or endof the bladev 52 ofpunch 44, when the slide is in its foremost position, a block 92 ofsubstantiall the same width as mandrel 32, is mount on the slide 30 at aoint midwa between the side edges of the atter and a jacent the rear endof the mandrel. The block 92 has a. suitable guide for the wire extendinentirely across the same at the front en thereof, this guide beingprovided by an an ular recess 93, which interce ts'the front en andbottom surfaces of sai block and also the surfaces of both of its sides,or which, in other words, is open at the front and bottom sides and atboth ends. This recess 93 flares towards that end thereof which isopposite the front end of the guide tube 89, and its other end is ofsubstantially the same size as a section of the wire W.

The plates 6 and 27 are provided with horizontal slots 94 which extendrearwardly from the front ends of such plates a distance sufcient toaccommodate the wire W in all positions of slide 30 when such wireprog'ects or is being or is about to be projected rom the adjacent frontend of gui e tube 89 over and across the mandrel 32. v The lower edge ofslot 94 in plate 6 is sli htly below the top of slide 30, as is also theottom edge of slot 94 in plate 27 for the major part of its length. Asmall angular knife 95 is removabl secured, as by a screw, to the plate6 wit i its short horizontal arm closelyverlying the front end ofthebottom edge of slot 94 in said plate, the ed e of the inner end of saidarm constituting t e cutting ed e of the knife with which the adjacentedge o lthe lower end of the die member 46 is adapted to coact, when thedie is depressed, to shear the wire. The hottom'edge of slot 94 in plate27 is provided, at a point slightly rearwardly of the knife 95, with a,raised portion or cam 96 having beveledA or inclined ends, the functionof which cam will presentl be described.

The front web 7 of rame A is cut away or .notched at its lower end asindicated at 97, and the plates 5 and 26 are cut away or horizontallyslotted at 'their lower front end portions as indicatedat `98. Thecut-away construction described enables the user of the machine readilyto view the front end portion of the feeding slide 30 with its mandrel32 and the guide block 92 thereon and the sctionspf cutting the wire andof forming and driving the staples; it also facilitates the removal ofvpieces of wire which may become caught or trapped in the mechanism.

The anvil 4 is provided intermediate its side edges and directly belowthe plunger device, with a transverse groove or depression 4', the -formof whichV is best shown in Fig. 5. This groove is adapted to receive anupset the ends of a staple towards each other as suchstaple is beingforced by the punch of the plunger' device through superposed sheets ofmaterial supported on the anvil, to thereby clench the said ends againstthe lowermost of said sheets.

'lhe springs 11 and 12 normally act to maintain the main frame Atogether with the auxiliary frame and the slide 30 mounted on thelatter, in their raised uppermost positions with respect to the base 1;and thespring 68 normally acts to maintain lever 60 and thereby theplunger device vin their raised uppermost ositions with respect to themain and auxiliary frames. The slide 30 is then in its foremost positionwith its mandrel 32 directly beneath the plunger` device,'and lboth thedie 43 and the punch 44 of the plunger device are at the up er limit oftheir vertical movement with t e lower ends of notches 48 in the die 43engaging the fixed lugs 49, the pin 59 of punch 44 engaging the upperend of the slot 58 in the die, the teeth of pawl 53 engaging the notches55 in the die, and the tooth 57 of block 51 engaging the upper of thetwo spaced teeth and 41 on the ever 37. These normal positions of thevarious parts as described, are those in which they are disposed at theend of the up stroke of the machine. Such of the parts of the machine asappear in each of Figs. 1, 3, 5 and 6 are shown therein in their normalggsitions. A very deep gap is then provided tween the anvil 4 and themandrel 32 for insertion of sheets to be fastened or stapled together.such gap, as clearly shown in Fig. 1, extending from the anvil andmandrel almbst to the pivot pin 10. If the machine is now in operativecondition, wire will have been threaded through the machine from spool Sand' `will extend from the latter through the clutch devices and C andguide tube 39 with an end portion W therecf of proper length to beformed into a staple,

projecting from the front end of said tube over the knife 95 and mandrel32 and through' the guide notch 93 of block 92 substantially to theplane of the inner surface of plate 5.' m5

the gap between the anvil 4; and mandrel 32 13@ 6 applied to the handle62 of lever 60 suiiicient to impart thereto a complete down stroke, suchstroke being limited by the engagement of the wrist in 66 with the upperend of die 43.` It may here be noted thatk as the handle 62 of lever60'is located a considerable distance forwardly of the point of'connection between such lever and the plunger device, less pressure needbe exerted in actuating the lunger device through its complete down stroe, because of the gained leverage obtained, than where the manualpressure is applied directly to and in line with the plunger device ashas been customary in machines of this type heretofore produced. Upon soapplying pressure to the handle 62, the frame A together with theplunger device and all other parts mounted on such frame, includnotches55 in the die.

mg lever 60, are first moved as a unit about the pivot pin 10 againstthe tension of springs 11 and 12, the combined strength of these springsbeing less than that of spring 68, until the front end; of the bottomweb 28 of the auxiliary frame engages the sheets to be fastened with apressure sufficient to securely hold the same in position. Thereafterlever is moved downwardly with respect to frame A about pivot 61 againstthe action of sprin'g 68, the lever, through thelinks 64 and wrist pin66 then imparting downward movement to the punch 44 of the plungerdevice. During the first part ofthe downward movement of punch 44 thedie 43 is positively moved therewith because of the engagement of theteeth of pawl53 with the The positive downward movement thus imparted tothe die continues until the lower endsof the members 45 and 46 thereofare 'almost down in engagevce ' form action of each of the ment with theuppermost of the sheets being fastened together: at this point the pawl53 is moved about its pivot against the action of spring 54. by reasonof lthe engagement of its lug 56 with the upper screw 29. and the pawlteeth are thus disengaged from the notches 55. Thereafter the punch 44continues to move down independently of the die until the lower end ofits driving blade 52 is substantially flush with the lower ends of thedie members 45 and 46, when further relative downward movement of thepunch is prevented by the wrist pin 66 striking the top of the die. anddie members 45 and 46 are now in engagement with the uppermost ofthesheets being fastened, and the lugs 49 of plates 26 and 27 are nearlyengaged by the upper ends notches 48 in the die. Bv the. simpleconstruction described a constant throw and uniparts of the plungerdevice are obtained in the successive down Strokes of the machine, andthis regardless The said lower ends of blade 52` of the aggregatethickness of the superposed. sheets being fastened together. Also bylimiting the downward movement or throw of the punch and its blade 52,as described, any danger of the end of said blade forcing the superposedsheets being secured together, no matter how thin the separate sheets orhow little the aggregate thckness of the sheets may be, is entirelyeliminated. In the downward movement imparted to die 43 as described,thelower end of the member 46 there- .of first coacts with knife 95 t6'cut ofil the ,transversely extending forward end section W of the wire,and both die members 45 and`46 then bendthe end portions of said wiresection down over the sides of the mandrel 32. to form the legs of astaple, the notches in the lower ends of the die'members at the sametime acting to line up said end portions or'legs with and guide theminto the inner grooves 50 of such members. At the completion of the downstroke of the die, the staple is thus completely formed and is locatedbetween the lower spaced end portions of the die members 45 and 46 withits legs disposed in the grooves 50 and with the lower ends of said legsand said members substantially flush. Somewhat before the completion ofthe down stroke of die 43, the

pro]ection or tooth 57 on the punch member 'E 51 is moved intoengagement with the lower tooth 40 on the upper end of lever 37 andeffects movement of the latter about pin 38 in. a clock-wise direction(referring to Fig.

base of the formed staple, pushes the staple from grooves 50. drives thelegs of the staple through the sheets disposed over anvil 4, and forcesthe ends of said. legs againstthe bottom of groove 4 in the anvil tothereby bend over and clench the same against the lowermost of saidsheets. u tion 57 of the punch has moved lever 37 still farther in aclock-wise direction and thereby has effected further rearward' movementof Meanwhile the proiecv70 base of a staple through all or any o the Yslide 30; andA upon completion of the down I stroke of the punch. theparts will be positioned-as shown in Fig. 2 with the slide at the limitof its rearward movement. In the rearward movement ofl slide 30, theclutch dei vice C exerts no gripping action on the wire andsuch clutchdevice' and the guide tube 89 therefore slide or travel .freelv backalong the wire. the latter then-being held against rearward movement bvthe gripping action of clutch deviceC. .Accordingly at the end of therearward recprocatory movement of slide 30 the forward end sec-tion ofthe wire will be. projecting from the front end of tube 89 and willextend from the latter transverse.- ly over the slide and through therecess 93 in the guide block 92. The construction is such that the saidprojecting section of wire will be of substantially the same length asthe section W from which a staple has just been formed. The wire, ofcourse, is being advanced through the tube 89 and projected from thefront end of the latter throughout the rearward movement of slide 30;and as the slide is moving back past the cam 96 the latter will act toraise the end of the wire and guide the same transversely over thi=mandrel 32; any interference of the end of the wire with the adjacentside of the mandrel 32 and the catching or trapping of the wire betweenthe slide and the guideway therefor being thus effectually prevented.Upon now removing the pressure from handie 62, the frame A and the partscarried thereby will be automatically returned to their normal positionsas shown in Fig. l.

the springs 11 and 12 acting. to raise said frame about pin 10 andspring 68 acting to raise lever and thereby move the plunger devicethrough its up stroke and reciprocate the slide 30 to its foremostposition in which the transversely extending end sect-ion of the wire islined up beneath the plunger device. In the forward reciprocatorymovement of the slide 30, all the wire in advance of the clutch device Cwill be moved forwardly with the slide, as the-said clutch device willthen grip the wire and clutch device C will exert no gripping actionthereon, and an amount of wire equal in length to such movement of theslide will thus be withdrawn or unreeled from the spool S. The machineis now ready to be again actuated to produce, drive and clench anotherstaple.

The machine shown and specifically described herein is merelyillustrative of a prel ferred embodiment of my invention, and it is tobe understood that the same is subiect to numerous changes andmodifications without departure from the spirit of the invention or thescope of the appended claims.

Having now described my invention what I claim as new and desire toprotect by Letters Patent, is as follows:

1. In, a machine of the class described, a base member having an anvil,a frame member pivotally mounted on said base member at a pointrearwardly of said anvil and carrying mechanism adapted to coact withsaid anvil to staple together material disposed between said members,the pivotal mounting for the frame member comprising pairs of lugsrespectively provided on said members and a pivot pin mounted in one ofsaid pairs of lugs and extending loosely through openings provided inthe. other pair, the said lugs on the frame member having forwardlyextending arms disposed beneath the base member. and coacting therewithto limit the upward pivotal movement of the frame member, and tensionedspring means connected to said arms and also to the base forwardly ofsuch arms.

2. In a machine of the class described, a frame, a slide mounted on saidframe for reclprocatory movement between two extreme positions, meanscomprisingr a guide for wire movable with and terminating adjacent theslide for directing the wire transversely of the slide as the latter ismoved from one of said positions, and means located between said guideand the slide for raising the wire as it is so directed to insure thatthe same will pass over the slide.

3. In a machine of the class described, a slide mounted for movementbetween two eX- treme positions, a guide from which wire is adapted tobe advanced in a direction transverse to the slide as the latter ismoved from one of said positions, and means between said guide and theslide adapted to raise that portion of wire first so advanced from-theguide to insure that the same will pass over the slide.

4. In a machine of the class described, a slide mounted for movementbetween two extreme positions, a guide from which wire is adapted to beadvanced in a direction transverse to the slide as the latter is' movedfrom one of said positions, and a fixed cam between said guide and theslide adapted to be engaged by that portion of the wire first soadvanced from the guide and to raise the same to insure the passage ofthe wire over the slide.

5. In a machine of the class described, a frame having a guideway, aslide mounted in said guideway for reciprocatory movement between twoextreme positions, a guide movable with the slide, said guide having oneend terminating adjacent to but spaced from one side of the slide andfrom which wire is adapted to be advanced in a direction transverse tothe slide as the latter` is moved from one o said positions, and a camprovided on said guideway between the said end of the guide and theslide adapted to raise that portion of the wire first so advanced fromthe guide to insure the passage of the wire over the slide. 1

6. In a fastening machine of the class described, a base having an anvilover which material to be fastened is adapted to be positioned, a framepivotaliy connected to said base at a point rearwardly of the anvil,spring means biasing said frame to a position in which the front endthereof is in i raised spaced relation to the anvil, mechanism mountedon said frame oradvancing Wire, for forming staples from the wire andfor driving formed staples .through mate-- rial. so positioned over theanvil and against iso the latter, said Vmechanism comprising a plungerdevicemounted on the front portion of the frame, a lever pivoted to theframe rearwardly of the plunger device and extending forwardly beyondthe latter, means positively connecting said plunger device to saldlever intermediate the ends of the latter, and s ring means of Vgreaterstrength than said rst mentioned spring means, biasing said lever andthereby said plunger device to predetermined raised positions withrespect to said frame.

7. In a fastening machine of the class described, a base having ananvil, a frame movably associated with said base and having a portionnormally in spaced relation to said anvil to permit1 material to befastened together to be inserted between such portion and the anvil,mechanism mounted on said frame for advancing wire, for forming staplesfrom the wire and for driving formed staples through material positionedover the anvil and against the latter, and means for actuating saldmechanism comprising a member pivotally mounted on said frame and oerativel and positively connected to sald mechanism and an operatinghandle for said member which is more remote from the pivotal mounting ofthe member than is the point of connection thereof with such mechanism,said member having a resilient connection with said frame whereby uponpressure being applied to the member in a given direction the framewillfbe actuated so as to move its said portion towards said anvil.

8. In a fastening machine of the class described, a base having an anvilover which material to be fastened together is adapted to be positioned,a frame pivotally connected to said base at a point rearwardly of saidanvil and biased to a position in which the front end portion thereof isin raised spaced relation to the anvil, means for forming staples andfor driving the same through such material when so positioned comprisinga plunger device mounted on the front end portion of the frame forvertical reciprocatoryV movement, said plunger device comprising aforming die and a driving punch capable of relative vertical movement,actuating means operable to first move the frame downwardly intoengagement with such material when so positioned, to then effectdownward movement of said die to form a staple and to thereafter eifectdownward movement of said punch relatively to the die to drive a staple,the downward movement of said die being adapted to be limited by directengagement thereof with said material, means havingpositive connectionwith the punch and adapted to coact with the die to limit the downwardmovement `of the punch relative to the die, means limiting the upwardmovements of said die and punch,

and means biasing the die and punch to their uppermost positions.

9. In a fastening machine of the class described, a base having ananvil, a'source of wire supply, means for producing staples from thewire and for driving such staples comprising a plunger device mountedabove said anvil for vertical reciprocatory move- -ment and biased to araised inoperative position, a slide mounted for horizontal movementbetween two extreme positions said slide having a mandrel with which theplunger device is adapted to coact and which is located beneath saiddevice in one extreme position of the slide, means whereby upon eachoperation of the machine said slide withdraws wire from said source, aguide movable with the slide, said guide having one end terminatingadjacent said mandrel'and from which wire is adapted to be advanced in adirection transverse to and over the slide as the latter is moved fromone of said positions, and a guide member provided on said slide in sucha position with respect to the said end of the guide as to be engaged bythe wire so advanced and to so position the wire over the mandrel as toinsure that the same will'be properly lined up with the plungerdevicewhen the mandrel is beneath the latter.

. 10. In a machine of the class described, a slide mounted forreciprocatory movement between two extreme positions, a guide movabletherewith, said guide having one end terminating adjacent to one side ofthe slide and from which wire is adapted to be advanced in a directiontransverse to and over the slide as the latter is moved from one of saidpositions, a plunger device movable in a direction transverse to themovement of the slide and adapted when the latter is in a predeterminedrelation thereto to act on a section of wire so advanced to produce astaple therefrom, and means `for insuring the proper lining up of such asection of wire with the plunger device' when the slide is in saidpredetermined relation comprising a guide member carried by the slide ina position to be engaged'by wire as it is advanced from the said end ofAthe guide.

11. In a machine of the class described, a slide mounted for movementbetween two extreme positions, a guide movable with the slide and fromwhich wire is adapted to be advanced in a direction transverse to andover the slide as the latter is moved between. said extreme positions,and guiding means carried by the slide and adapted to be engaged by wireso advanced from said guide and to act thereupon to locate the same in acertain transverse position with respect to the slide.

12. In a. machine of the class described, a slide mounted forreciprocatory movement, a guide movable with the slide, said guidehaving an end terminating adjacent to but v lil@ spaced from one side ofthes lide and from which wire is adapted to be advanced in a directiontransverse to and over the slide in the movement of the latter, and amember mounted on the slide and having a guideway flaring in a directiontowards the said end of the guide, said guideway being adapted to beengaged by wire so advanced from said guide and to act thereupon tolocate the same in a definite transverse position with respect to theslide.

13. In a machine of the class described, a frame, a plunger device forproducing staples from wire and for driving such staples, said devicebeing mounted on said frame for vertical reciprocatory movement, awireieeding slide devicemounted on said frame for horizontalreciprocatory movement between two extreme positions in one of which itis adapted to cooperate with the plunger device to form a staple, andmeans whereby movement of one of said devices is adapted to impartmovement to the other comprising a lever pivotally mounted on saidframe, said lever being operatively connected at one end with one ot'said devices and having a lostmotion connection at the otherend with theother oit said devices.

le. In a machine of the class described, a frame plunger device .torproducing staples from wire and for driving such staples, said devicebeing mounted on ksaid frame for vertical reciprocatory movement, awireaeeding slide mounted on said frame or hori- ,ontal reciprocatorymovement between two extreme positions in one oi. which it is adapt-edto cooperate with the plunger device form a staple, and means wherebymovement of the plunger device is adapted to impart movement to theslide comprising a bell crank lever pivotally mounted on said trame,said lever being operatively connected at one end with the slide andhaving spaced teeth the other end and a projection on the plunger deviceextending into the space between said teeth.

l5. In a fastening machine of the class dei-ribcd, a trame, a plungerdevice comprisin n punch member and a die member moiinte :n seid framefor vertical movement, said members having a pin and slot connectionproviding 'for limited relative movement thereof, said punch memberbeing springbiased to a raised inoperative position in which the pin ofsaid connection engages one end of the slot thereof, said frame and diemember each having means adapted directly to coact to positively anddefinitely limit the upward movement of the die member, and meanscomprising a pawl mounted on one of said members and biased to aposition where it operatively engages the other member whereby positivemovement is imparted to the die member from the punch member u onmovement of the latter from said position,

said frame having a part arranged to be engaged by said pawl so as tomove the latter to inoperative position, after the die member has beenso positively moved a certain distance, and thereby permit continued andindependent vertical movement of the punch member.

16. In a. fastening machine of the class described, a frame, a plungerdevice comprisin a punch member and a die member mounted on said framefor vertical movement, means comprisin a pin on the punch member and aslot in t e die member with which said pin is enga ed whereby suchmembers are connected or limited relative movement, said members beinbiased to raised inoperative positions in w 'ch said pin engages theupper end o said slot, and means com rising a spring-pressed pawlmounted on t e punch member and a notch in the die member with whichsaid pawl is normally operatively engaged whereby positive movement isimparted to the die member from the punch member upon movement of thelatter from its said inoperative position, said 'frame havin a partarranged to be engaged by said aw so as to disengage the latter from sainotch after the die member has been so ositively moved a certaindistance, and thereby permit continued and independent vertical movementof the punch member.

17., In a `fastening machine of the class described, a frame, a plungerdevice comprising a punch member and a die member mounts on said framefor vertical movement, said members havin a pin and slot connectionproviding for re ative movement thereof, said punch member being biasedto a. raised inoperative position in which the pin of said connectionengages one end of the slot there" of, means comprising a awl mounted onone of said members and biased to a position where it o ratively engagesthe other meinber where y positive movement is imparted to the diemember from the unch member upon movement of the latter ipx-om saidposition, said frame having a part arranged to be engaged by said pawlso as to move the latter to inoperative position, after the die memberhas been so positively moved a certain distance, and thereby permitcontinued and independent vertical movement of the punch member, andmanually operable means for actuating the punch member to impartdownward movement thereto, said members havin coacting means in additionto said pin an slot connection for limiting the downward movement of thepunch member with respect to the die member.

18. In a fastening machine of the class described, a frame, a plungerdevice comprising a punch member and a die member mounted on said framefor vertical movement, said members having a. in and slot connectionVroviding for limited relative movement t ereof, said die member andframe having means adapted directly to coact to positively anddefinitely limit the u Ward movement of the die member on t e frame,said punch member being biased to a raised inoperative position in whichthe pin of said connection engages one end of the slot thereof, andmeans comprising a pawl mounted on one of said members and biased to aposition where it operatively engages the other member whereby positivemovement is imparted to the die member from the punch member uponmovement ofthe latter from said position, said frame having a partarranged to be engaged by said pawl so as to move the latter toinoperative position, after the die member has been so positively moveda certain distance, and thereby' permit continued and independentvertical movement of the punch member.

19. In `a fastening machine of the class described, a base having ananvil, a source of supply of wire, means disposed above said base forwithdrawing wire from said source and for feeding, the same towards andover said' anvil comprising a reciprocatory device and .one-way wireclutch means, and clutch release means comprising a member mounted onsaid base for movement into operative position so as to effect therelease of said clutch means and Vpermit free passage of the wiretherethrough, said member being biased to inoperative position. 20. In afastening machine of the class described, a base having an anvil, asource of suppl of wire, means disposed above said base or withdrawingwire from said source and for feeding the same towards and over saidanvil comprising a reciprocatory slide and a one-way clutch devicecarried by the latter and through which the wire is adapted to extend, aone-way wire clutch device disposed between said source and slide andfixed with reference to the direction of the reciprocatory movement ofthe slide, and

clutch release means comprising a member disposed below said base andpivotally mounted thereon, said member being biased to inoperativeposition and havin portions which, when the member is movedg tooperative position, extend upwardly through apertured portions of saidbase and respectively enga and releasesaid clutch devices to permit reepassage of wire through the latter in either direction.

21. In a fastening machine, a base member having an anvil, a framemember pivotally mounted on said base member at a point rearwardly ofsaid anvil and carrying mech anism adapted to coact with said anvil tostaple to ther material disposed between said mem ers, the pivotalmounting for said frame member comprising a pair oflugs respectivelyprovided on said members and a pivot exten ing loosely through anopening proin mounted on one of said lugs and vided in the other lug,the said lug on the frame member having a forwardly extending armdisposed beneath the base member and adapted to coact therewith to limitthe upward pivotal movement of the frame mem- January 1930.

VICTOR A. SVENSSON.

